Pattern for car-axle boxes



(M0de1.) 4 Sheets-Sh'eet 1.

M. OMARA.

PATTERN FOR. GAR AXLE BOXES.

Patented Apr. 8, 1884.

i 4 Sheets-Shet '2. M. OMARA. PATTERN FO-R GAR AXLE BOXES.

No. 296,706. Patented 8, 1884.

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. (ModeL') 4 Sheets-Sheet. 3.

M; OMARA.

PATTERN FOR UAR AXLE BOXES.

- Patented Apr. 8, 1884.

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PATTERN FOR GAR, AXLE BOXES Patented/Apr. 8, 1 884,. .5-

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MICHAEL OMARA, OF CHARLESTON, SOUTH CAROLINA.

PATTERN FOR CAR-AXLE BOXES.

SPECIFICATION forming part of Letters Patent No. 296,706, dated April 8,1884.

Application filed December 17, 1893. (ModelJ To all whom it mayconcern;-

Be it known that I, MroHAEL OMARA, a citizen of the United States,residing at Charleston, in the county of Charleston and State of SouthCarolina, have invented cer tain new and useful Improvements in thePatterns for Car-Axle Boxes, of which the following is a specification,reference being had therein to the accompanying drawings, forming partof the same. l

My invention has relation to patterns for casting ear-axle boxes; andthe object is to dispense with the large and cumbersome drysand core,and at the same time greatly to facilitate and cheapen the cost ofmanufacture of said boxes, whereby they may be placed upon the marketata minimum cost; and to these ends the novelty consists in theconstruction of the pattern, as will be hereinafter more fullydescribed.

Figure 1 is aperspective view of a cast-iron caraxle box of the form ingeneral use. Fig. 2 is a perspective view of my improved pattern forcasting the above form of axle-box, with the detachable parts shownseparated. Fig. 3 is a view of the hinge-lug, dry-sand core. Fig. i is aview of the dust-guard recess-core, reduced in size, which is made ofdry sand in two parts, a 0, to facilitate its insertion in the mold.Fig. 5 represents the cheek-flask on the follow-board and the shell Brammed half-way up. Fig. 6 is a top plan view of the same, with the halfportion E of the dust-guard box and the rabbet-strip C in place and theflask rammed flush with the top of the shell. Fig. 7 shows theside D inplace and the cope portion of the flask on and rammed; and Fig. 8 showsthe cheek and cope turned over and the drag in place and rammed. Fig. 9is a perspective view of the removable half of the dust-guardbox-pattern, and Fig. 10 is a longitudinal vertical section of the moldready for casting.

A is the pattern, and consists of the shell B, rabbet-st-rip C, side D,and one half E of the dost-guard box-pattern, which has tongues a v a,working in guides a c in the shell B. The

rest of the pattern is all in one piece with the shell B, including thecore-prints c c of the hinge-lug F, and the core-print e of thedustguard recesscore. The parts I) b of the shell B are detachablysecured thereto in the usual manner. The detachable parts are removedfrom the shell B, and it is placed on the follow-board with its openside uppermost, (see Fig. 7,) and the cheek-flask placed thereon. Themolding sand is then rammed in to a distance of about half-way theheight of the shell, (see 5,) and the detachable half E of thedust-guard box pattern and rabbet-strlp O are then placed in properposition in the shell, and the balance of the molding-sand filled 1n andrammed, and the parting made flush with the upper surface of theshell.The s de D is then placed in position, the cope portion of the flaskadjusted to the cheek, and then filled and rammed with sand. (See Fig.7.) The two cope and cheek flasks and the followboard are then turnedover together, the follow-board removed, the parts b I) put on B, andthe parting made as in the first instance. The drag-flask is nowadjusted to the other side of the cheek-flask, and filled and rammed asbefore. (See Fig. 8.) This third or drag flask is now lifted off, andthe shell B drawn out of the cheek-flask, the part E and the part Cremaining upon the side D in the second or check flask. One half, 0, ofthe dust-guard recess-core is now placed in its position in thecheek-flask, being held in said position in the mold in one-half of therecess left by the coreprint 6, and the hingelug core is also inserted,it being held in proper position by the ends 1 k, which correspond tothe lug core-prints on the shell B, The third or drag flask is nowrestored to its place on the cheek-flask, and the three flasks clampedtogether, and their position reversed. with the second or cope flask ontop, which is now removed, with the side D remaining in it, which isthen drawn out. The part E and the part 0 are now drawn out of thecheek-flask, and the remaining half, a, of the dust-guard recesscore isset in place. The sprue is now made in the second or cope flask, and theflasks are now clamped together, and the mold is complete and ready forthe running of the molten metal.

Heretofore these boxes have been cast from a pattern made in two halves,and a large cumbersome dry-sand core was used, and when the casting wasmade there was always a number of fins in places where the metal run inthe joint between the core and the mold, and these had to be chippedoft, involving adis run in.

ditional expense, and also Where the dry-sand core is used the castingis often of unequal thickness, owing to the difficulty of placing it inits exact position in the mold and its great liability to shift in themold when the metal All these objections are overcome by my invention,and a casting of even and regular thickness produced.

Having thus fully described my invention, What I claim as new anduseful, and desire to secure by Letters Patent of the United States, 1s

1. A pattern for casting car-axle boxes, consisting of the shell B,having one .part, 6, of the dust-guard box-pattern E, and of theremovable rabbet-strip G, the side D, and the separate part E of thedust-guard box-pattern, as shown and described.

2. A pattern for casting oar-axle boxes, consisting of the shell B,having the core-print e and one part, 6, of the dust-guard box E, and ofthe removable rabbet-strip O, the side D, and the separate part E of thedust-guard box-pattern, in combination with the divided dust-guardbox-core a 0, as and for the purpose set forth. a

3. A pattern for casting ear-aXle boxes, consisting of the shell B,having oore-prints c c and 6, one part, 6, of the dust-guard box E, andof the removable rabbetstrip O, the side D, and the separate part E ofthe dust-guard box-pattern, in combination with the divided dust-guardbox-core n 0 and the hinge-lug core h i, as set forth.

In testimony that I claim the foregoing I ap pend my signature.

MICHAEL OMARA. Witnesses:

A. G. HEYLMUN, EDWARD WEBSTER.

